bVNC 用戶端源碼分析(android)

bVNC 用戶端源碼分析(android)

1. 1)登入介面
2. 2)案頭Activity
   3)啟動vnc
   4)顯示案頭

1. 1)登入介面
2. com.iiordanov.bVNC.bVNC.java
   
3. 
   
4. 建立登入介面（填IP，PORT等等
   
5. @Override
   
6. public void onCreate(Bundle icicle) {
   
7. 
   
8. goButton = (Button) findViewById(R.id.buttonGO);
   
9. goButton.setOnClickListener(new View.OnClickListener() {
   
10. @Override
    
11. public void onClick(View view) {
    
12. if (ipText.getText().length() != 0 && portText.getText().length() != 0)
    
13. canvasStart();
    
14. else
    
15. Toast.makeText(view.getContext(), R.string.vnc_server_empty, Toast.LENGTH_LONG).show();
    
16. }
    
17. });
    
18. }
    
19. 
    
20. 
    
21. 
    
22. private void canvasStart() {
    
23. if (selected == null) return;
    
24. MemoryInfo info = Utils.getMemoryInfo(this);
    
25. if (info.lowMemory)
    
26. System.gc();
    
27. start();
    
28. }
    
29. 
    
30. /**
    
31. * Starts the activity which makes a VNC connection and displays the remote desktop.
    
32. */
    
33. private void start () {
    
34. isConnecting = true;
    
35. //從登陸介面讀取資料寫入bean
    
36. updateSelectedFromView();
    
37. saveAndWriteRecent();
    
38. 
    
39. //啟動RemoteCanvasActivity, 參數為selected.Gen_getValues()
    
40. Intent intent = new Intent(this, RemoteCanvasActivity.class);
    
41. intent.putExtra(Constants.CONNECTION,selected.Gen_getValues());
    
42. startActivity(intent);
    
43. }
    
44. 
    

2)案頭Activity

1. com.iiordanov.bVNC.RemoteCanvasActivity.java
   
2. 
   
3. @Override
   
4. public void onCreate(Bundle icicle) {
   
5. super.onCreate(icicle);
   
6. //讀取bean傳過來的參數
   
7. initialize();
   
8. 
   
9. //繼續串連，也就是向VNC服務端發起串連
   
10. continueConnecting();
    
11. }
    
12. 
    
13. 
    
14. void continueConnecting () {
    
15. 
    
16. // Initialize and define actions for on-screen keys.
    
17. initializeOnScreenKeys ();
    
18. 
    
19. //實際發起串連
    
20. canvas.initializeCanvas(connection, database, new Runnable() {
    
21. public void run() {
    
22. try { setModes(); } catch (NullPointerException e) { }
    
23. }
    
24. });
    
25. }
    
27. 3)啟動vnc
    
28. com.iiordanov.bVNC.RemoteCanvas.java
    
29. 
    
30. /**
    
31. * Create a view showing a remote desktop connection
    
32. * @param context Containing context (activity)
    
33. * @param bean Connection settings
    
34. * @param setModes Callback to run on UI thread after connection is set up
    
35. */
    
36. void initializeCanvas(ConnectionBean bean, Database db, final Runnable setModes) {
    
37. 
    
38. Thread t = new Thread () {
    
39. public void run() {
    
40. try {
    
41. 
    
42. if (isSpice) {
    
43. startSpiceConnection();
    
44. } else if (isRdp) {
    
45. startRdpConnection();
    
46. } else if (connection.getConnectionType() < 4) {
    
47. //啟動串連
    
48. startVncConnection();
    
49. }
    
50. }
    
51. }
    
52. }
    
53. }
    
54. 
    
55. /**
    
56. * Starts a VNC connection using the TightVNC backend.
    
57. * @throws Exception
    
58. */
    
59. private void startVncConnection() throws Exception {
    
60. Log.i(TAG, "Connecting to: " + connection.getAddress() + ", port: " + connection.getPort());
    
61. 
    
62. String address = getAddress();
    
63. int vncPort = getPort(connection.getPort());
    
64. boolean anonTLS = (connection.getConnectionType() == Constants.CONN_TYPE_ANONTLS);
    
65. try {
    
66. rfb = new RfbProto(decoder, address, vncPort,
    
67. connection.getPrefEncoding(), connection.getViewOnly());
    
68. Log.v(TAG, "Connected to server: " + address + " at port: " + vncPort);
    
69. rfb.initializeAndAuthenticate(connection.getUserName(), connection.getPassword(),
    
70. connection.getUseRepeater(), connection.getRepeaterId(), anonTLS);
    
71. } catch (Exception e) {
    
72. throw new Exception (getContext().getString(R.string.error_vnc_unable_to_connect) + e.getLocalizedMessage());
    
73. }
    
74. 
    
75. rfbconn = rfb;
    
76. pointer = new RemoteVncPointer (rfbconn, RemoteCanvas.this, handler);
    
77. keyboard = new RemoteVncKeyboard (rfbconn, RemoteCanvas.this, handler);
    
78. 
    
79. rfb.writeClientInit();
    
80. rfb.readServerInit();
    
81. initializeBitmap (displayWidth, displayHeight);
    
82. decoder.setPixelFormat(rfb);
    
83. 
    
84. handler.post(new Runnable() {
    
85. public void run() {
    
86. pd.setMessage(getContext().getString(R.string.info_progress_dialog_downloading));
    
87. }
    
88. });
    
89. 
    
90. sendUnixAuth ();
    
91. if (connection.getUseLocalCursor())
    
92. initializeSoftCursor();
    
93. 
    
94. handler.post(drawableSetter);
    
95. handler.post(setModes);
    
96. handler.post(desktopInfo);
    
97. 
    
98. // Hide progress dialog
    
99. if (pd.isShowing())
    
100. pd.dismiss();
     
101. 
     
102. rfb.processProtocol(this, connection.getUseLocalCursor());
     
103. }
     
104. 
     
105. 4)顯示案頭
106. com.iiordanov.bVNC.RfbProto.java
     
107. java實現的RFB映像顯示
     
108. public void processProtocol () throws Exception {
     
109. 
     
110. }